Jonathan hatch



'vapplied thereto, and' i D @uiten faire anni ffies.`

`liilROVElldElNT lll' PAGKINGEEVOLVTNG JOINT.

mm Para: No. 60,369, dans Dumber 11, 186,6.'

die rlgebuitf tt'ternlr in time Estar haunt ant maling;` mnt at theimm?.

TQ ALL V,WHOM I1 MAY OONCERN: l

, Beit known that-I, J oNArneN ,Hsrcmof South Windham, 'in thefconnty of Windham, andState of Connecticuthavc invented a certain new andQusefulImprovement in Revolving Joints of steam or hotiwater heated dryingcylinders, calendar rolls and-'other devices,of which the followi'ngi'isa full, clear and exact description, reference being hadtotheaceompanying drawing, forming part of this specification, in which-Vll'i'gurel represents anxa'ride longitudinal view of a steamheatedjdr'ying cylinder with my improvement Figure 2 a longitudinalsection thereof. v Like'letters referto like parts'in both figures, Y.The object of my improvement is to more ell'ectually provide'aganstleakage at the revolving joint of cylinders vandvrollsv which areheated bythe passage through them of steam or hot water, It will suiicehere, however, to describe .my vinvention in connection' with arevolving drying cylinder, heated by steam, such asis so In these4cylinders greatldiiliculty has been experigenerally employed inthemanufacture of textile fabrics.

The importance of providing against leakage in such enced in keepingtight their junction with the inlet pipe.

' contrivances will be' apparent when 4it is' considered that thevresult to be `attained is a drying one, against which l journal, and.provided with any suitable soft or fibrous packing. "lhis merely gofrthepacking on the pipe, without any end-pressure or hearing thereon,

i pipe with said cylinder has basin liy projecting tbe pipe into thelatter 'throughan ordinary stndin'g'box and gland arranged at itsoneenddzg'l secures 'a circumferential bin which, 'though' .the'glaud-befsequently'tightened at agreat inconvenience and loss offinie,doesnotprevent the steam and condensed vapor from .oozing or workingv itsway round 4the-pipe and through the stuffing boxand gland,such packingpresenting two straight lines of escape, namely, through the stuihng boxaround the exterior of the packing-and gland, and through or pasttheinner surfaces of the two latter, and around or along the pipe,

which hasvno solid or other barthan the circumferential binding ofthesoft packing on it, to such last mentioned n l' line of escape.

These remarks apply also to the exit end ofthe cylinder, `to which myimprovement is likewise applicable, but it will be sudicicnt to refer toit here in connection with one, `say the inlet pipe; and my improvementconsists in providing" the pipe, in'such a connection, with a collar andpacking round the pipe on either side of it, which packing istightened,not vmerely by the screwing downfof the gland in the stuflingbox, but

also by the collar lthrough the expansion of the pipe as it becomesheated in passing the steam or hot water.

This collar stops the joint or passage round ,the pipe, confines theescape, if any, past the exterior of the double packingandestablishes,lin addition to the circumferential binding of the packing,an end pressure orbcaring on the pipe orits collar in direction of Vthelength of the pipe. In further explanation of this my improvement, A, inthe accompanying drawing, represents an ordinary drying cylinder, withits journals a a, either one of which is bored out to-form a. stliflingbox, b, into the mouth of which lits a gland e that may be tightened upin i i i the usual manner by screws, d, and through which andthestalling box the pipe B projects into communication with the cylinder.This pipe B, which may be the inletfor the steam from theboilcr, whilethe escapeniay he through the opposite journal f the cylinder, is madewith a fast collar e, of about the internal diameter of the stuffing boxb, in which it iits, and is arranged so as to leave a space forpackingor packings ff', on either side of the Si collar, and between itand the inner ends of the stnllngbox and gland. From this description itwill be obvious that on screwing up the gland, not only is the outerpacking forced circumferentially outward against `thestuiling box andpipe, but also against the outer face f the collar e, while theexpansion of the pipe as it is heated by the steam passing through it,causes the inner face of said collar to similarly force outCircumferctially the inner packing f', and likewise to induce pressureot' it against the inner ond of the stalling box and interior face` ofthe collar, thus forming two close packngs with only one glandadjustment, also establishing an endwise packing` of the pipe, andlimiting the len-linge or escape to one lino or passage, namely, roundha periphery of the collar` Vand exterior of the outer packing andgland, which the inner packing almost, if not altogether eii'ectuallyprevents, thereby securing to theV drying cylinder perfect, or nearlyso, freedom from leakage.

What I claim as new :..nd useful herein, and desire to secure by LettersPatent, is-

TheV combination, with the stalling hox I; and'gland a of the pipe B,formed with a collar, c, and provided with packin gs f f o n each sidoor face of said collar, substantially as and for the purpose or purposesherein set forth. v i I i JONATHAN HATCH. Witnesses:

.GUiLronn SMITH,

L. C. Km0.

INDHAM, CONNECTICUT, ASSIGNOHTC

